Our full technical support staff does not monitor this forum. If you need assistance from a member of our staff, please submit your question from the Ask a Question page.

Log in or register to post/reply in the forum.

Volt 116 sampling rate vs measurement result

jcwai Nov 22, 2021 06:42 AM

I'm connecting 4 Verivolt Isoblock I-ST-1c 4A/5V current transducer and 2 Phoenix Contact MACX MCR-Vdc 500V/5V voltage transducer into Volt 116 to measure solar DC current and DC voltage via Campbell Surveyor.

When sampling rate faster than 5Hz, all parameter were measured in expected range; when set to slower sampling rate <1Hz, voltage reading dropped close to 0V. I'm expecting to run a 5sec scan interval for my system but it doesn't return result within expected range.

Is it a setting issue or some noise from the system setup causing the system can't g through slower scaning interval?


JDavis Nov 23, 2021 04:27 PM

When you changed to a slower scan rate, did you switch the measurement to the ACPower() measurement? ACPower would read 0 in a DC application.

Make sure you have the signal grounds connected to the VOLT116.

You are using isolated measurement modules. They should be running on a power supply that also powers the VOLT116 or has a ground connection to the ground of the power supply for the VOLT116.

Any noise issues should be lower at low fNotch settings than at high fNotch settings.

JDavis Nov 23, 2021 05:21 PM

If issues persist, I would suggest exporting both the working and nonworking configurations. Then contacting your local technical support.

Log in or register to post/reply in the forum.